vasoconstriction
noun
va·so·con·stric·tion
ˌvā-zō-kən-ˈstrik-shən 
: narrowing of the lumen of blood vessels
Examples of vasoconstriction in a Sentence
Recent Examples on the Web
Your blood vessels narrow in a process called vasoconstriction to conserve heat.
—
Alyssa Ages, Outside, 22 Feb. 2026
Oxidative stress markers contribute to hypertension by promoting vasoconstriction (the narrowing of blood vessels).6
Fiber intake promotes the growth of beneficial gut bacteria that produce short-chain fatty acids (SCFAs).
—Colleen Doherty, Verywell Health, 10 Feb. 2026
Oscillating between vasodilation and vasoconstriction acts as a workout for your vascular system in the same way that bicep curls are a workout for your arms, Josh Hagen, MS, PhD, the faculty director of the Human Performance Collaborative at The Ohio State University, tells SELF.
—Caroline Tien, SELF, 3 Feb. 2026
How decongestants works Decongestants shrink swollen tissues and blood vessels through a process called vasoconstriction.
—Bestreviews, Chicago Tribune, 23 Jan. 2026
See All Example Sentences for vasoconstriction
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Alyssa Ages, Outside, 22 Feb. 2026
Oxidative stress markers contribute to hypertension by promoting vasoconstriction (the narrowing of blood vessels).6
Fiber intake promotes the growth of beneficial gut bacteria that produce short-chain fatty acids (SCFAs).
—Colleen Doherty, Verywell Health, 10 Feb. 2026
Oscillating between vasodilation and vasoconstriction acts as a workout for your vascular system in the same way that bicep curls are a workout for your arms, Josh Hagen, MS, PhD, the faculty director of the Human Performance Collaborative at The Ohio State University, tells SELF.
—Caroline Tien, SELF, 3 Feb. 2026
How decongestants works Decongestants shrink swollen tissues and blood vessels through a process called vasoconstriction.
—Bestreviews, Chicago Tribune, 23 Jan. 2026
See All Example Sentences for vasoconstriction
Cite this Entry
“Vasoconstriction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vasoconstriction. Accessed 7 Mar. 2026.
Copy CitationMedical Definition
vasoconstriction
noun
va·so·con·stric·tion
-kən-ˈstrik-shən
: narrowing of the lumen of blood vessels especially as a result of vasomotor action
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